optimize
Merge remote-tracking branch 'origin/develop' into optimizeForMobileBrowser
Issue #2297 Migrate Menu and Particle to Cocos2d-x v2.1.4
fixed #2287 fixed a bug of EditBox that it works wrong when called cc.EGLView.getInstance().setDesignResolutionSize()
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss2287_FixEditBoxBug
fix replaying audio effects on chrome browsers
fixed #2297 Migrate tilemap, particle and menu to Cocos2d-x v2.1.4
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss2297_MigrateTilemapEtc
fixed #2295 fixed a bug that some waring message of WebGL shows when load loading scene.
Optimize John Resig's inheritance pattern (cc.Class.extend) with advanced property initialization.

Use 'new Function' to initialize all properties in the constructor in order to
stablize the memory layout of an instance while avoiding turning turning objects
to dictionary mode in V8.
Optimize cc.clone by making sure the cloned object has the same prototype chain as the original.
fixed #2295 fixed the problem that cc.Grid3D and cc.TiledGrid3D doesn't work
fixed #2295 fixed the problem that cc.Grid3D and cc.TiledGrid3D doesn't work
Merge pull request #1010 from dingpinglv/Iss2287_FixEditBoxBug

fixed #2287 fixed a bug of cc.EditBox that it works wrong when called cc.EGLView.getInstance().setDesignResolutionSize()
Merge pull request #1012 from MarkEHenderson/audioFix

Thanks very much, Mark.
Address Dinping's review: place .ctor in cocos2d_extern.js so that Closure Compiler won't obfucate it.
Merge pull request #1013 from dingpinglv/Iss2297_MigrateTilemapEtc

fixed #2297 Migrate tilemap, particle and menu to Cocos2d-x v2.1.4
Merge pull request #1014 from dingpinglv/Iss2295_Migrate3DEffects

fixed #2295 fixed a bug that some waring message of WebGL shows when load loading scene.
Merge pull request #1015 from oupengsoftware/taskbranch/COCOS2D-51-1-rebased

Thank you very much, Kenny.
It's wonderful!
Merge pull request #1016 from oupengsoftware/taskbranch/COCOS2D-51-2-rebased

It looks great.
Thanks very much, Kenny.